- I believe this is not windows related because everything is updated as soon as Microsoft releases them
You should check the site of Radeon, MS definitely release HW drivers in another pace than the vendors. And they even release new drivers not instantly to the "whole" customer population. They have reasons for that, in fact I think these are the very same why some people not want to buy the next windows version immediately, "wait and see if it is stable enough", "try with a small representive group first, before patching the masses" , MS cannot afford to roll out a faulty driver (often), so they wait longer than the driver manufacturer.
There are many commercial tools that scan free for missing drivers (and you must pay for the update function).
I just checked my PC which was up to date according to windows with - http://www.drivereasy.com/ -
Result: 26 drivers not up to date and 1 missing completely (bluetooth, never used)
So my advice is: grab one of those tools and just do the scan to see if your video drivers are up to date.